| 摘要 |
The invention relates to a method for measuring permeation of gases passing through a material, including the following steps: a) supplying gas to a permeation enclosure (10) during which a first chamber (11) is supplied with a target gas flow including at least one target gas corresponding to a gas for which one tries to determine the permeation through the material (M), and simultaneously supplying gas to a measurement enclosure (20) with at least one calibrated flow including at least one reference gas different from the target gas; b) during the gas supply step and in the measurement enclosure (20), measuring the reference gas present at instant (t) and the target gas present at the same instant (t) after having crossed the material (M) by permeation; c) calculating a correction factor at instant (t) by comparing the measured value of the reference gas present at instant (t) with the reference gas supply calibrated flow; and d) determining the permeation of the material (M) with respect to the gas, from the measured value of the target gas present at instant (t) and corrected by the correction factor at instant (t). |
